LaserLyte Laser Cartridge Trainer Bore Sighter 40S&W Red Laser Gold. Quickly and easily sight in your iron sights laser sights or optics without going to the range using the bore sight end cap. Swap out and use the laser trainer cap to train with LaserLyte electronic targets. Specifications for LaserLyte Laser Cartridge Trainer: Manufacturer: LaserLyte Additional Features: Red Laser Laser Color: Gold Features of LaserLyte Laser Cartridge Trainer and Bore Sight Each cartridge includes two swappable end caps to allow for use as a bore sight cartridge or laser trainer. Easily drops into the chamber without damage and aligns to the bore. Batteries included Laser trainer cap is firing pin activated and emits a red laser for a split second to show bullet impact every time your hammer or striker fires. Laser bore sight cap is constant ON for accurate sight-in of scopes red dots iron sights or laser sights. Firing pin activated laser trainer cap works with all LaserLyte targets for dry fire practice Package Contents: LaserLyte Laser Cartridge Trainer and Bore Sight LaserLyte 1226990: Laser Cartridge Trainer Bore Sighter 40S&W Red Laser Gold